[formfields,formwidgets] move default size and maxlength from field to widget init (that is quite still unsatisfactorily)

for some reason, use of an anonymous function makes things more readable

ability to map attributes to something else than usual cw mapping on sql generation

fix regression w/ NOT symetric relation (distinct not needed)

handle attribute selection on variable selected using MAX()

don't use internal address

added some assertion on expected hooks class attributes

rewrite test schema using a single schema file

[formwidgets] ensure textarea for richstring has not ridicuously small size (close #344547)

oops